I just tried using the linked USB ethernet adapter posted by OP and this PoE USB-C splitter. It didn't work, gave error about not enough power.
https://www.amazon.com/gp/product/B087F4QCTR
I'm going to see if I can find one that puts out more power
I'm running this injector and this splitter for the 2 MNTD black that I have and it works fine.
These are all the products i used for this setup. after testing so many different items, this setup gave me the most rewards.
my area is flat, so choose your antenna accordingly.
POE Injector - Router to Data In - Data out to POE Splitter
Ethernet Cable From Router to POE Injector
POE Splitter - For Power using Ethernet - ( so no need for power)
Connecters - U might not need if you have correct connection
Cable I Used. made a huge difference
Outdoor Enclosure - super well made, lot cheaper, Need bit DIY to make it work
8dbi Antenna I Used - This is a solid antenna got me the most rewards
Hey, This is exactly what I got from Amazon
UCTRONICS PoE Splitter USB-C 5V -... https://www.amazon.com/dp/B087F4QCTR?ref=ppx_pop_mob_ap_share
Cudy POE200 30W Gigabit PoE Injector Adapter, 30W,10/100/1000Mbps RJ-45, IEEE 802.3af / 802.3at Compliant, up to 100 Meters (325 Feet) https://www.amazon.com/dp/B07PR9CBGL/ref=cm_sw_r_apan_i_YFW96RSKZC161V60GVHZ?_encoding=UTF8&psc=1